Process RAM database for British Columbia fisheries stock status and harvest levels. Each RAM stock will be filtered to the RAM stock ID and RAM area (to separate region-specific stocks), and then the stock status parameters B/Bmsy and F/Fmsy for that stock for each year reported.
Total catch data for each stock for each year will be used to determine final weightings. Since the distribution of catch data is not differentiated within the reporting region, we will use SAUP and/or DFO spatial catch data to determine the distribution and allocate the total catch proportionally.
2 Data Source
Reference: RAM
Downloaded: 2016
Description: Fishery status (B/Bmsy and F/Fmsy) for stocks in BC waters
Time range: 1927-2015 (varies by stock)
Format: .RData file
3 Methods
Explore RAM: Preliminary RAM database v. 3.8. Load from .RData file, including time series and metadata. This initial chunk explores the variables included in the data.
3.1 BC-specific stocks
From global RAM data, filter to stocks whose region is ‘Canada West Coast’, and save to the ‘int’ folder in GitHub.
3.1.1 Examine time series of stocks
For each BC-specific stock, determine time series of B/Bmsy, F/Fmsy, and catch.
3.2 Plot stock status against modified Kobe
3.3 Associate stocks with spatial boundaries
Spatial boundaries for RAM stocks are derived from shapefiles provided by DFO.
From dfo_khunter/d2017/boundaries.gdb:
QCI aka Haida Gwaii, WCVANI, QCS, SoG, CC
From dfo_khunter/d2017/shrimp_trawl_areas/DFO_BC_SHRIMP_TRAWL_MGMT_AREA.shp:
SMA-14, SMA-FR, SMA-PRD
From dfo_khunter/d2016/management_boundaries/groundfish_mgmt_areas/MajorMinor_GroundfishManagementAreas.shp:
5AB
BCW and PCOAST are union of all (areas 1-5) from boundaries.gdb
WCVANI-SOG-QCI is the union of those areas (1, 4, 5)
HS will be the area between Haida Gwaii island and the North Coast, bounded on the south by Area 5AB and bounded on the north at the level of the northeastern-most point of Haida Gwaii
FRDU is Fraser River Designatable Unit - since eulachon are harvested when they return to the mouth of the Fraser River, we will assume that this fishery falls entirely within Strait of Georgia region. If SAUP data are available, perhaps we can use those instead.
## OGR data source with driver: ESRI Shapefile
## Source: "/home/shares/ohi/git-annex/bcprep/fis/v2017/stock_boundaries", layer: "stock_boundaries_bcalb"
## with 10 features
## It has 2 fields
4 Provenance
Run ID: 10 (4260942); run tag: “standard run”
Run elapsed time: 55.733 seconds; run memory usage: 21943.2 MB
